Repurpose i7 950?

So you know how it goes. You start with a couple of upgrades and before you know it you've built a new PC. My old system is an i7 950 with 12 GB of RAM, and SSD and a GTX 970 GPU. It's in a full tower case.

So I don't feel it's worth the hassle of selling the old system. I'd like to repurpose it and have it in another room for browsing, Kodi, Usenet and maybe older games. But that bloody case is huge. It's a full ATX motherboard so I'm wondering, other than going for a mid tower are there any clever solutions for small form factor setups?

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